Test device for compression test of thermoplastic composite sheet after impact

A composite material thin plate and test device technology, which is applied in the direction of testing material strength by using one-time impact force, testing material strength by applying stable tension/pressure, measuring devices, etc., can solve the problem of not being able to obtain the value of material strength, and reduce the test Cost, ease of maintenance, and impact reduction effects

Active Publication Date: 2021-01-05
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The above two reasons lead to the failure of the traditional post-impact compression test method to obtain the actual desired material strength value, so the test equipment needs to be redesigned

Method used

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  • Test device for compression test of thermoplastic composite sheet after impact
  • Test device for compression test of thermoplastic composite sheet after impact

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Embodiment

[0031] The invention relates to a test device for compression test of thermoplastic composite sheet after impact. The device is mainly composed of upper and lower parts which are separated and identical. The two parts are arranged symmetrically up and down during actual work. Each part includes a coupling piece 1 , a base 2 and a baffle part, and the baffle part includes a side base 3 , an inner side baffle 6 and an anti-buckling plate 5 . The couplings 1 of the upper and lower two identical parts are connected with the universal testing machine in the form of a top coupling and a bottom coupling during actual operation.

[0032] This embodiment is described with the upper portion. like figure 1 As shown, the connecting piece 1 is arranged on the top of the base 2, and is connected with the base 2 through threads, and is used for connecting the universal testing machine. Two anti-buckling plates 5 are connected to the bottom of the base 2 and are respectively arranged at th...

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Abstract

The invention relates to a test device for a compression test of a thermoplastic composite sheet after impact. The test device comprises two test piece clamping parts which are separated up and down,are symmetrically arranged and have the same structure, wherein each test piece clamping part comprises a base (2), and a connecting piece (1) and a baffle part which are respectively arranged at thetwo ends of the base (2), the baffle part clamps a thermoplastic composite material test piece, and the connecting pieces (1) of the two test piece clamping parts are connected with a universal testing machine in the form of a top connecting piece and a bottom connecting piece during actual operation. Compared with the prior art, the test device has the advantages of preventing the test piece frombuckling during compression, ensuring that a damage area left after the test piece is impacted is not changed, reducing the influence of the buckling-restrained plate on a test result, reducing the test cost and the like.

Description

technical field [0001] The invention relates to the technical field of compression testing of composite materials, in particular to a testing device for compression testing of thermoplastic composite material sheets after impact. Background technique [0002] Due to their high specific strength and specific stiffness, composite materials are widely used in the aviation field. However, the strength of traditional thermosetting composite materials decreases significantly after being subjected to impact loads. Therefore, in recent years, thermoplastic composite materials have attracted much attention because of their better impact resistance. [0003] The impact resistance of composite materials can be measured by the residual compressive strength test after the material is impacted. At present, the traditional post-punching test method of composite materials (such as ASTM D7137) is designed for thermosetting composite laminates with a thickness of 4 to 6 mm. When , it often ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/30G01N3/08G01N3/02
CPCG01N3/02G01N3/08G01N3/30
Inventor 陆陶冶陈秀华杨亚雄
Owner SHANGHAI JIAO TONG UNIV
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